package com.heima.user.filter;

import com.heima.model.user.pojos.ApUser;
import com.heima.utils.common.ThreadLocalUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
 * App登录用户过滤
 *    urlPatterns: 拦截路径   /* 拦截所有请求
 */
@Component
@Order(1)
@WebFilter(filterName = "appTokenFilter",urlPatterns = "*/")
public class AppTokenFilter extends GenericFilter {
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
    HttpServletRequest request = (HttpServletRequest) servletRequest;
    HttpServletResponse response = (HttpServletResponse) servletResponse;
    //请求头中去除user
        String userId = request.getHeader("userId");
        //校验
        if (StringUtils.isNotEmpty(userId) && !userId.equals(0)){
            //排除用户
            //存入ThreadLoad
            ApUser apUser = new ApUser();
            apUser.setId(Integer.valueOf(userId));
            ThreadLocalUtils.set(apUser);
        }
        //放行
        filterChain.doFilter(request,response);

    }
}
